Python set discard function is useful to discard or remove an item from the given set. The syntax this set discard function is:
set_Name.discard(element)
Python set discard Example 1
The set discard function is the same as remove function. This set function helps you to discard or remove an item from a given set. It is a very useful set function if you know the item you want to discard. The below code discards or remove 30 from a given set called discardSet
TIP: Please refer to the Python set article to understand everything about Sets in Python.
# Python set discard method
discardSet = {10, 25, 30, 45, 50}
print("\nOld Set Items = ", discardSet)
# Python Discard Set Item
discardSet.discard(30)
print("After Discard Method - Set Items = ", discardSet)
Old Set Items = {50, 25, 10, 45, 30}
After Discard Method - Set Items = {50, 25, 10, 45}How to discard set item Example 2
In this example, first, we declared a string set. Next, we used this set discard method on this string set. Here, discard function discard or remove the orange from the discard fruits set.
# Python set discard method
discardFruitSet = {'apple', 'mango', 'cherry', 'kiwi', 'orange', 'banana'}
print("\nOld Set Items = ", discardFruitSet)
# Python Discard Set Item
discardFruitSet.discard('orange')
print("After Discard Method = ", discardFruitSet)
Old Set Items = {'apple', 'kiwi', 'banana', 'cherry', 'mango', 'orange'}
After Discard Method = {'apple', 'kiwi', 'banana', 'cherry', 'mango'}How to discard set item Example 3
As we said earlier, this Python set discard function is the same as the remove method. However, if we are discarding non-existing items, this function does not throw an error.
In this set discard example, we tried to remove Berry from the fruits set.
# Python set discard method
discardFruitSet = {'apple', 'mango', 'cherry', 'kiwi', 'orange', 'banana'}
print("\nOld Set Items = ", discardFruitSet)
# Python Discard Set Item
discardFruitSet.discard('orange')
print("After Discard Method = ", discardFruitSet)
# Python DIscard Non existing set item
discardFruitSet.discard('Berry')
print("After Discard Method = ", discardFruitSet)
